JP4684113B2

JP4684113B2 - Bonding structure

Info

Publication number: JP4684113B2
Application number: JP2006024005A
Authority: JP
Inventors: 美速今村; 孝人藤井; 幸司福本
Original assignee: Kobe Steel Ltd
Current assignee: Kobe Steel Ltd
Priority date: 2006-02-01
Filing date: 2006-02-01
Publication date: 2011-05-18
Anticipated expiration: 2026-02-01
Also published as: JP2007203325A

Description

本発明は、金属製部材に形成した穴に筒状体を通し、筒状体を電磁成形により拡管して両者を接合した接合構造体、又は２つの金属製部材に形成した穴に筒状体を通し、筒状体を電磁成形により拡管して両金属製部材を接合した接合構造体の改良に関する。 The present invention relates to a joined structure in which a tubular body is passed through a hole formed in a metal member, the tubular body is expanded by electromagnetic forming, and both are joined, or a tubular body is formed in a hole formed in two metal members. The tubular structure is expanded by electromagnetic forming to improve the joint structure in which both metal members are joined.

特許文献１には、前後の板状壁とそれらを前後方向に接続する板状の接続壁からなる断面四角形の金属製部材（バンパーリインフォース）の後側の板状壁にのみ穴を形成し、又は前後の板状壁に穴を形成し、その穴にアルミニウム合金からなる筒状体（バンパーステイ）を通し、筒状体を電磁成形により拡管して両者を接合した接合構造体が記載されている。
特許文献２には、２つの板状壁とそれらを接続する板状の接続壁からなるＣチャンネル形金属製部材の両板状壁に穴を形成し、その穴にアルミニウム合金からなる筒状体を通し、筒状体を電磁成形により拡管して両者を接合し、これにより金属製部材を筒状体で補強した接合構造体が記載されている。
特許文献３には、２つのＣチャンネル形金属製部材の板状壁に穴を形成し、穴が直線上に並ぶように２つの金属製部材を組み合わせ、穴にアルミニウム合金からなる筒状体を通し、筒状体を電磁成形により拡管し、これにより２つの金属製部材を筒状体で接合した接合構造体が記載されている。 In Patent Document 1, a hole is formed only in the plate-like wall on the rear side of a square-shaped metal member (bumper reinforcement) made up of front and rear plate-like walls and a plate-like connection wall connecting them in the front-rear direction, Alternatively, there is described a bonded structure in which holes are formed in the front and rear plate walls, a tubular body (bumper stay) made of an aluminum alloy is passed through the holes, the tubular body is expanded by electromagnetic forming, and both are joined. Yes.
In Patent Document 2, a hole is formed in both plate-like walls of a C-channel metal member composed of two plate-like walls and a plate-like connection wall connecting them, and a cylindrical body made of an aluminum alloy in the hole. The joint structure is described in which the tubular body is expanded by electromagnetic forming and joined together, thereby reinforcing the metallic member with the tubular body.
In Patent Document 3, a hole is formed in the plate-like wall of two C-channel metal members, the two metal members are combined so that the holes are arranged in a straight line, and a cylindrical body made of an aluminum alloy is formed in the hole. In addition, a joining structure is described in which a tubular body is expanded by electromagnetic forming, and thereby two metal members are joined by the tubular body.

特開２００４−２３７８１８号公報JP 2004-237818 A 特開２００２−１６００３２号公報JP 2002-160032 A 特開２００２−８６２２８号公報JP 2002-86228 A

しかし、前記特許文献１において、金属製部材の後側の板状壁にのみ穴を形成し、この穴に筒状体を通し、電磁成形して接合する場合、接合強度が弱いという問題がある。一方、筒状体を金属製部材の前後の板状壁に接合する場合、筒状体の先端（フランジ）が金属製部材の前側の板状壁から前方に突出し、これにより前記板状壁の前面が平面でなくなるため、そこに他部材を密着配置しにくく、また前方の板状壁にも大きい穴を形成することに伴い、金属製部材の強度が低下するという問題がある。特許文献２，３でも、筒状体を金属製部材の両板状壁に接合するから、特許文献１と同様の問題がある。 However, in Patent Document 1, when a hole is formed only in a plate-like wall on the rear side of a metal member, and a cylindrical body is passed through the hole and joined by electromagnetic forming, there is a problem that the joining strength is weak. . On the other hand, when joining a cylindrical body to the plate-shaped wall before and behind a metal member, the front-end | tip (flange) of a cylindrical body protrudes ahead from the plate-shaped wall of the front side of a metal member, and, thereby, said plate-shaped wall Since the front surface is no longer flat, it is difficult to place another member in close contact therewith, and there is a problem that the strength of the metal member is reduced due to the formation of a large hole in the front plate-like wall. Patent Documents 2 and 3 also have the same problem as Patent Document 1 because the cylindrical body is joined to both plate-like walls of the metal member.

本発明は、板状壁を有する金属製部材と筒状体を電磁成形を利用して接合した接合構造体、又は板状壁を有する金属製部材を２個、電磁成形を利用して筒状体で接合した接合構造体において、接合強度及び金属製部材の強度を低下させず、かつ少なくとも金属製部材の一方の面を平面に保ち、必要に応じて他部材を密着配置できるようにすることを目的とする。 The present invention is a bonded structure in which a metal member having a plate-like wall and a cylindrical body are joined using electromagnetic forming, or two metal members having a plate-like wall, which are tubular using electromagnetic forming. In a bonded structure joined by a body, the bonding strength and the strength of the metal member are not reduced, and at least one surface of the metal member is kept flat, and other members can be closely arranged as required. With the goal.

本発明に係る接合構造体（請求項１）は、前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、及び一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、前記穴の全てに第２部材の胴部が貫入し、かつ前記穴が形成されていない板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、板状壁に形成された前記穴の内周面に密着していることを特徴とする。なお、本発明において、前方側とは第２部材の底が向く方向、後方側とは第２部材の開放側が向く方向を意味する。 The joint structure according to the present invention (Claim 1) includes a metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, and one end closed and the other end opened. The bottom member is made of a second member made of an aluminum alloy, and a hole through which the body portion of the second member penetrates is formed in one or more plate-like walls on the rear side of the first member. The hole is not formed in the wall, the body of the second member penetrates all of the hole, and the bottom of the second member abuts the plate-like wall from which the hole is not formed from the rear side, Further, the body portion of the second member is expanded by electromagnetic forming and is in close contact with the inner peripheral surface of the hole formed in the plate-like wall. In the present invention, the front side means the direction in which the bottom of the second member faces, and the rear side means the direction in which the open side of the second member faces.

この接合構造体では、第２部材の胴部が第１部材の穴が形成された板状壁に固定され、かつ第２部材の底が第１部材の穴が形成されていない板状壁に当接し、これにより、第１部材と第２部材が強固に接合される。また、第１部材の前方側の板状壁に前記穴が形成されていないことで、第１部材の強度低下が防止される。
上記接合構造体において、第１〜第３部材は例えば次のような構成をとることができる。
（１）第１部材が複数個の板状壁とこれを前後方向に接続する板状の接続壁を有する形材からなる。形材とは長さ方向に実質的に同一の断面を有し、押出成形、圧延加工、板材の曲げ成形などにより製造される。
（２）第２部材は、鍛造、深絞り加工等により成形した一体物、押出パイプの端部に底を溶接接合したもの、押出パイプの端部にカップ状の部材を被せたものなどが利用できる。
（３）第１部材の最も前方側の板状壁にのみ前記穴（第２部材の胴部が貫入する穴）が形成されてなく、他の板状壁には全て前記穴が形成されている。この場合、第２部材の底が第１部材の最も前方側の板状壁に当接するので、両部材の接合が最も安定する。 In this joined structure, the body portion of the second member is fixed to the plate-like wall in which the hole of the first member is formed, and the bottom of the second member is fixed to the plate-like wall in which the hole of the first member is not formed. The first member and the second member are firmly joined by contact. Further, since the hole is not formed in the plate-like wall on the front side of the first member, the strength of the first member is prevented from being reduced.
In the above bonded structure, the first to third members can have the following configurations, for example.
(1) The first member is formed of a shape having a plurality of plate-like walls and a plate-like connection wall connecting the plate-like walls in the front-rear direction. The profile has substantially the same cross section in the length direction and is manufactured by extrusion molding, rolling, bending of a plate material, or the like.
(2) As the second member, an integrated product formed by forging, deep drawing, or the like, a product obtained by welding the bottom to the end of the extruded pipe, a product having a cup-shaped member on the end of the extruded pipe, etc. are used. it can.
(3) The hole (hole through which the body of the second member penetrates) is not formed only in the plate-like wall on the foremost side of the first member, and the hole is formed in all other plate-like walls. Yes. In this case, since the bottom of the second member abuts on the foremost plate-like wall of the first member, the joining of both members is most stable.

（４）前記電磁成形により拡管された第２部材の胴部が、第２部材の板状壁に形成された前記穴（又は前記穴が形成された板状壁）の前後において前記穴より外径方向に拡がっている。外径方向に拡がっている部分は穴の近傍のみでもよいし、胴部の長さ方向に沿ってより広い領域であってもよい（例えば隣接する板状壁の間が全体的に張り出していてもよい）。胴部がこのように外径方向に拡がることにより、胴部と穴の内周面の密着がより強化されると同時に、第２部材の長さ方向への動きが確実に拘束される。
（５）上記（４）の場合において、第１部材の最も後方側の板状壁の後方に第２部材の胴部の開放端が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に前記板状壁に後方側から当接するフランジが形成されている。
（６）上記（４）の場合において、第１部材の最も後方側の板状壁の後方に第２部材の胴部が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に他部材への接合用フランジが形成されている。第１部材が自動車のバンパーリインフォースであり、第２部材がバンパーステイであれば、この接合用フランジは、サイドメンバーへの接合用として用いられる。
（７）第２部材の底と、それが当接する第１部材の板状壁が互いに接合されている。例えばボルト接合などの機械的接合、溶接接合、接着剤による接合などが利用できる。これにより第１部材と第２部材の接合がより強固となる。 (4) The body portion of the second member expanded by the electromagnetic forming is outside the hole before and after the hole (or the plate-like wall in which the hole is formed) formed in the plate-like wall of the second member. Expands in the radial direction. The portion extending in the outer diameter direction may be only in the vicinity of the hole, or may be a wider area along the length direction of the trunk (for example, the space between adjacent plate-like walls protrudes as a whole). Also good). By expanding the body part in the outer diameter direction in this manner, the adhesion between the body part and the inner peripheral surface of the hole is further strengthened, and at the same time, the movement of the second member in the length direction is reliably restrained.
(5) In the case of the above (4), the open end of the body part of the second member protrudes behind the plate wall on the most rear side of the first member, and the projecting part is expanded by the electromagnetic forming, A flange that abuts the plate-like wall from the rear side is formed at the open end of the part.
(6) In the case of (4) above, the barrel of the second member protrudes behind the plate-shaped wall on the most rear side of the first member, and the protruding portion is expanded by the electromagnetic forming so that the barrel is opened. A flange for joining to another member is formed at the end. When the first member is a bumper reinforcement of an automobile and the second member is a bumper stay, the joining flange is used for joining to the side member.
(7) The bottom of the second member and the plate-like wall of the first member with which it abuts are joined together. For example, mechanical joining such as bolt joining, welding joining, joining with an adhesive, and the like can be used. Thereby, joining of the 1st member and the 2nd member becomes stronger.

本発明に係る接合構造体（請求項８）は、前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材、及び１個又は前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第３部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、第３部材の全部の板状壁に第２部材の胴部が貫入する穴が形成され、第３部材の板状壁は少なくとも１個が第１部材の前記穴が形成された板状壁に当接し、かつ全てが第１部材の前記穴が形成されていない板状壁の後方側に所定間隔を置いて位置し、第１部材及び第３部材の前記穴の全てに第２部材の胴部が貫入し、かつ第１部材の前記穴が形成されていない板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、第１部材と第３部材の板状壁に形成された前記穴の内周面に密着していることを特徴とする。 A joined structure according to the present invention (Claim 8) is a metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, a bottomed end with one end closed and the other end opened. A second member made of a cylindrical aluminum alloy, and a third member made of metal having one or a plurality of plate-like walls arranged at predetermined intervals in the front and rear, on the rear side of the first member A hole through which the body portion of the second member penetrates is formed in one or more plate-like walls, and the hole is not formed in the plate-like wall on the front side, and all the plate-like walls of the third member are formed. A hole through which the body part of the second member penetrates is formed, at least one plate-like wall of the third member abuts on the plate-like wall in which the hole of the first member is formed, and all of the plate-like wall of the first member It is located at a predetermined interval on the rear side of the plate-like wall where the hole is not formed, and the body of the second member is placed in all of the holes of the first member and the third member. And the bottom of the second member abuts from the rear side to a plate-like wall in which the hole of the first member is not formed, and the body of the second member is expanded by electromagnetic forming, It is closely attached to the inner peripheral surface of the hole formed in the plate-like wall of the third member.

この接合構造体において、第３部材の板状壁のうち少なくとも１個を第１部材の前記穴が形成された板状壁に当接させるのは、両部材の板状壁を面接触させることにより、両部材の接合を安定化するためである。なお、第３部材の板状壁はどれもが第１部材の前記穴が形成されていない板状壁に当接せず、該板状壁の後方側に所定間隔を置いて位置している。
この接合構造体では、第２部材の胴部が第１部材及び第３部材の前記穴が形成された板状壁に固定され、その際に第２部材と第３部材の前記穴が形成された板状壁の少なくとも１個ずつが面接触で当接した状態で第２部材により固定され、かつ第２部材の底が第１部材の穴が形成されていない板状壁に当接しているので、第１部材と第３部材が強固に接合される。
上記接合構造体において、第１〜第３部材は前記（１）〜（３），（７）に記載した構成のほか、例えば下記構成をとることができる。
（８）第３部材が複数個の板状壁とこれを前後方向に接続する板状の接続壁を有する形材からなる。
（９）第３部材が複数個の板状壁を有し、第１部材の前記穴が形成された２個の板状壁の間に配置され、その板状壁に第３部材の最も前方側と最も後方側の板状壁がそれぞれ当接している。この場合、第１部材と第３部材の接合がより安定化する。
（１０）前記電磁成形により拡管された第２部材の胴部が、第１部材と第３部材の板状壁に形成された前記穴（又は前記穴が形成された板状壁）の前後において前記穴より外径方向に拡がっている。
（１１）前記（１０）の場合において、第１部材及び第３部材の板状壁のうち最も後方側の板状壁の後方に第２部材の胴部の開放端が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に前記板状壁に後方側から当接するフランジが形成されている。
（１２）前記（１０）の場合において、第１部材及び第３部材の板状壁のうち最も後方側の板状壁の後方に第２部材の胴部が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に他部材への接合用フランジが形成されている。 In this joint structure, at least one of the plate-like walls of the third member is brought into contact with the plate-like wall in which the hole of the first member is formed by bringing the plate-like walls of both members into surface contact. This is to stabilize the joining of both members. Note that none of the plate-like walls of the third member is in contact with the plate-like wall of the first member where the hole is not formed, and is located at a predetermined interval on the rear side of the plate-like wall. .
In this joined structure, the body of the second member is fixed to the plate-like wall in which the holes of the first member and the third member are formed, and at that time, the holes of the second member and the third member are formed. The at least one plate-like wall is fixed by the second member in a state of being in contact with each other by surface contact, and the bottom of the second member is in contact with the plate-like wall in which the hole of the first member is not formed. Therefore, the first member and the third member are firmly joined.
In the joined structure, the first to third members can have, for example, the following configurations in addition to the configurations described in (1) to (3) and (7).
(8) The third member is made of a shape having a plurality of plate-like walls and a plate-like connection wall connecting them in the front-rear direction.
(9) The third member has a plurality of plate-like walls, and is disposed between the two plate-like walls in which the holes of the first member are formed. Side and the rearmost plate-like wall are in contact with each other. In this case, the joining of the first member and the third member is further stabilized.
(10) Before and after the hole formed in the plate-like wall of the first member and the third member (or the plate-like wall in which the hole is formed) of the second member expanded by the electromagnetic forming It extends in the outer diameter direction from the hole.
(11) In the case of (10) above, the open end of the body portion of the second member protrudes behind the plate wall on the rearmost side among the plate walls of the first member and the third member, and the protruding portion is the aforementioned A flange that is expanded by electromagnetic forming and is in contact with the plate-like wall from the rear side is formed at the open end of the body portion.
(12) In the case of (10), the body portion of the second member protrudes behind the plate wall on the rearmost side among the plate walls of the first member and the third member, and the protruding portion is formed by the electromagnetic molding. The pipe is expanded, and a flange for joining to another member is formed at the open end of the body portion.

本発明に係る接合構造体（請求項１６）は、前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材、及び前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第３部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、第３部材の最も前方側の板状壁を除く全部の板状壁に第２部材の胴部が貫入する穴が形成され、第３部材の最も前方側の板状壁が第１部材の前記穴が形成されていない板状壁に後方側から当接し、第１部材及び第３部材の前記穴の全てに第２部材の胴部が貫入し、かつ第３部材の最も前方側の板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、第１部材と第３部材の板状壁に形成された前記穴の内周面に密着していることを特徴とする。 A joined structure according to the present invention (Claim 16) is a metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottom having a closed end and an open end. It consists of a cylindrical second member made of aluminum alloy and a metal third member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, and 1 or 2 on the rear side of the first member A hole through which the body portion of the second member penetrates is formed in the above plate-like wall, and the hole is not formed in the plate-like wall on the front side, and the plate-like wall on the most front side of the third member is excluded. Holes through which the body of the second member penetrates are formed in all the plate-like walls, and the plate-like wall on the foremost side of the third member is from the rear side to the plate-like wall on which the holes of the first member are not formed. Abutting, the body of the second member penetrates all of the holes of the first member and the third member, and the second member on the foremost plate wall of the third member The bottom is in contact from the rear side, and the body portion of the second member is expanded by electromagnetic forming, and is in close contact with the inner peripheral surface of the hole formed in the plate-like walls of the first member and the third member. Features.

この接合構造体では、第２部材の胴部が第１部材及び第３部材の穴が形成された板状壁に固定され、かつ第２部材の底が面接触で当接した第３部材と第１部材の穴が形成されていない板状壁に当接し、これにより、第１部材と第３部材が強固に接合される。第３部材の最も前方側の板状壁に前記穴を形成しないことにより、第３部材の強度低下が防止され、またその板状壁を第１部材の穴が形成されていない板状壁に当接させることにより、第１部材と第３部材の接合が安定化する。
上記接合構造体において、第１〜第３部材は前記（１）〜（３）、（８）、（１０）〜（１２）に記載した構成のほか、例えば下記構成をとることができる。
（１３）第３部材の前記穴が形成された板状壁の少なくとも１個が、第１部材の前記穴が形成された板状壁に当接している。この場合、第１部材と第３部材の接合がより安定化する。
（１４）前記（１３）の場合に、第３部材が第１部材の前記穴が形成されていない板状壁と前記穴が形成された板状壁の間に配置され、前記穴が形成された板状壁に第３部材の板状壁が当接している。
（１５）第２部材の底と、それが当接する第３部材の板状壁及び該板状壁が当接する第１部材の板状壁が互いに接合されている。 In this joined structure, the body of the second member is fixed to the plate-like wall in which the holes of the first member and the third member are formed, and the third member is in contact with the bottom of the second member by surface contact; The first member abuts on a plate-like wall in which no hole is formed, whereby the first member and the third member are firmly joined. By not forming the hole in the foremost plate-like wall of the third member, strength reduction of the third member is prevented, and the plate-like wall is changed to a plate-like wall in which the hole of the first member is not formed. By abutting, the joining of the first member and the third member is stabilized.
In the joined structure, the first to third members can have, for example, the following configurations in addition to the configurations described in (1) to (3), (8), and (10) to (12).
(13) At least one of the plate-like walls in which the hole of the third member is formed is in contact with the plate-like wall of the first member in which the hole is formed. In this case, the joining of the first member and the third member is further stabilized.
(14) In the case of (13), the third member is disposed between the plate-like wall in which the hole is not formed in the first member and the plate-like wall in which the hole is formed, so that the hole is formed. The plate-like wall of the third member is in contact with the plate-like wall.
(15) The bottom of the second member, the plate-like wall of the third member with which it abuts, and the plate-like wall of the first member with which the plate-like wall abuts are joined together.

本発明によれば、板状壁を有する金属製部材と筒状体を電磁成形を利用して接合した接合構造体、又は板状壁を有する金属製部材を２個、電磁成形を利用して筒状体で接合した接合構造体において、少なくとも最も前方側の板状壁に第２部材が貫通する穴が形成されていないため、第１部材の強度を余り低下させず、かつ少なくとも金属製部材の一方の面を平面に保つことができ、必要に応じてここに他部材を密着配置できる。
また、第１部材（又は第１部材と第３部材）の板状壁に形成した穴に有底筒状の第２部材を挿入し、第２部材の胴部を電磁成形により拡管して前記板状壁に固定するとともに、第２部材の底を前記穴が形成されていない板状壁に当接させているので、これにより接合強度を低下させることなく、第１部材と第２部材（又は第１部材と第２部材と第３部材）からなる接合構造体を得ることができる。 According to the present invention, two metal members having a plate-like wall and a metal member having a plate-like wall and a cylindrical body are joined using electromagnetic forming, or two metal members having a plate-like wall are used. In the joined structure joined by the cylindrical body, since the hole through which the second member penetrates is not formed at least on the frontmost plate-like wall, the strength of the first member is not significantly reduced, and at least the metal member One of the surfaces can be kept flat, and other members can be disposed in close contact with each other as necessary.
Further, the bottomed cylindrical second member is inserted into the hole formed in the plate-shaped wall of the first member (or the first member and the third member), and the body portion of the second member is expanded by electromagnetic forming to expand the tube. While fixing to a plate-shaped wall, since the bottom of the 2nd member is made to contact | abut to the plate-shaped wall in which the said hole is not formed, without reducing joint strength by this, a 1st member and a 2nd member ( Or the joining structure which consists of a 1st member, a 2nd member, and a 3rd member) can be obtained.

以下、本発明に係る接合構造体について、図１〜図１２を参照して具体的に説明する。
図１，２に示す接合構造体は、断面矩形のアルミニウム合金押出材からなる第１部材１と、有底筒状のアルミニウム合金からなる第２部材２を接合したものであり、第１部材１が例えばバンパーリインフォースであれば、第２部材２はバンパーステイである。第１部材１は、前後の板状壁４，５とそれらを接続する板状の接続壁６，７からなり、後方側の板状壁５に第２部材２の胴部８が貫入する円形の穴１１が形成されている。
第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。筒状素材１２は、例えばインパクト鍛造により一体成形されたもので、均一な径の胴部１３と閉じた底１４からなり、胴部１３の外径は前記穴１１の内径より若干小径であり、胴部１３の長さは板状壁４，５間の距離より長い。従って、筒状素材１２を第１部材１の穴１１を通し、底１４を前方側の板状壁４の内面に当接させたとき、胴部１３は板状壁５から後方側にかなりの長さで突出している。 Hereinafter, the bonded structure according to the present invention will be specifically described with reference to FIGS.
The joined structure shown in FIGS. 1 and 2 is obtained by joining a first member 1 made of an aluminum alloy extruded material having a rectangular cross section and a second member 2 made of a bottomed cylindrical aluminum alloy. For example, if bumper reinforcement is used, the second member 2 is a bumper stay. The first member 1 includes front and rear plate-like walls 4 and 5 and plate-like connection walls 6 and 7 that connect them, and a circular shape in which the body portion 8 of the second member 2 penetrates the plate-like wall 5 on the rear side. Hole 11 is formed.
The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. The cylindrical material 12 is integrally formed by impact forging, for example, and includes a body portion 13 having a uniform diameter and a closed bottom 14, and the outer diameter of the body portion 13 is slightly smaller than the inner diameter of the hole 11. The length of the body portion 13 is longer than the distance between the plate-like walls 4 and 5. Therefore, when the cylindrical material 12 is passed through the hole 11 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the front plate-like wall 4, the body portion 13 is considerably rearward from the plate-like wall 5. It protrudes in length.

筒状素材１２を第１部材１の穴１１に通し、底１４を前方側の板状壁４の内面に当接させ、以後は定法に従い、胴部１３の一部周囲を金型１５で包囲し、筒状素材１２の内部にコイル体１６を挿入し、コイル体１６に瞬間大電流を流し、筒状素材１２を拡管する。これにより得られた第２部材２は、底９が前方側の板状壁４の内面に当接し、胴部８が板状壁５に形成された穴１１に貫入しかつその内周面に密着し、板状壁５（穴１１）の前後において外径方向に拡がり（板状壁５の前後に張出部８ａ，８ｂが形成されている）、さらに開放端が拡開して、フランジ８ｃが形成されている。フランジ８ｃは他部材（第２部材２がバンパーステイであればサイドメンバ）への接合用フランジとして利用される。 The cylindrical material 12 is passed through the hole 11 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the plate-like wall 4 on the front side. Thereafter, a part of the body portion 13 is surrounded by a mold 15 in accordance with a normal method. Then, the coil body 16 is inserted into the tubular material 12, an instantaneous large current is passed through the coil body 16, and the tubular material 12 is expanded. As for the 2nd member 2 obtained by this, the bottom 9 contact | abuts to the inner surface of the plate-shaped wall 4 of the front side, the trunk | drum 8 penetrates into the hole 11 formed in the plate-shaped wall 5, and the inner peripheral surface It closely adheres and expands in the outer diameter direction before and after the plate-like wall 5 (hole 11) (the overhang portions 8a and 8b are formed on the front and rear of the plate-like wall 5), and the open end further expands to form a flange. 8c is formed. The flange 8c is used as a flange for joining to another member (a side member if the second member 2 is a bumper stay).

第２部材２の胴部８は拡径して穴１１の内周面に密着していることにより板状壁５に固定され、同時にその前後において外径方向に拡がって軸方向への動きも封じられ、板状壁５に対し強固に固定される。このように、第２部材２は、胴部８が第１部材１の後方側の板状壁５に穴１１の部分で固定され、かつ底９が前方側の板状壁４に面接触で当接しているため、第１部材１と第２部材２の接合は強固で安定したものとなる。
必要があれば、さらに第１部材１の板状壁４と第２部材２の底９にボルト穴を開け、両者をボルト接合する（接合箇所をＡで示す）ことにより、接合がより強固となる。ボルト接合の際、板状壁５の前面に他部材を同時にボルト接合することも可能である。板状壁５と底９に開けるボルト穴は、電磁成形前でも、電磁成形後でもよい。なお、第１部材１の板状壁５と第２部材の底９の接合方法はボルト接合に限定されない。 The body portion 8 of the second member 2 is expanded in diameter and is in close contact with the inner peripheral surface of the hole 11 so that it is fixed to the plate-like wall 5, and at the same time, it expands in the outer diameter direction and moves in the axial direction. It is sealed and firmly fixed to the plate-like wall 5. In this way, the second member 2 has the body portion 8 fixed to the plate-like wall 5 on the rear side of the first member 1 at the portion of the hole 11 and the bottom 9 in surface contact with the plate-like wall 4 on the front side. Since they are in contact with each other, the first member 1 and the second member 2 are joined firmly and stably.
If necessary, by further forming a bolt hole in the plate-like wall 4 of the first member 1 and the bottom 9 of the second member 2 and bolting them together (the joint location is indicated by A), the joining becomes stronger. Become. It is also possible to bolt other members to the front surface of the plate-like wall 5 at the same time. The bolt holes opened in the plate-like wall 5 and the bottom 9 may be before or after electromagnetic forming. The method for joining the plate-like wall 5 of the first member 1 and the bottom 9 of the second member is not limited to bolt joining.

図４に示す接合構造体は、第１部材１が略日形断面を有し、前後の板状壁１７〜１９とそれらを接続する板状の接続壁２１，２２からなる。最も後方側の板状壁１９に第２部材２の胴部８が貫入する穴２０が形成され、その前方の板状壁１８と最も前方の板状壁１７には穴が形成されていない。その他の点は図１に示す接合構造体と同じであり、同じ部位には図１と同じ番号を付与している。
図４に示す接合構造体において、第２部材２の底９は板状壁１８に面接触で当接している。しかし、設計上の必要があれば、板状壁１８にも第２部材２の胴部８が貫入する穴を形成し、第２部材２の底９を最も前方側の板状壁１７に当接させることもできる。また、設計上の必要があれば、さらに板状壁の多い例えば略目形断面の第１部材を用いることもできる。 In the joint structure shown in FIG. 4, the first member 1 has a substantially square cross section, and includes front and rear plate-like walls 17 to 19 and plate-like connection walls 21 and 22 that connect them. A hole 20 through which the body portion 8 of the second member 2 penetrates is formed in the rearmost plate-like wall 19, and no hole is formed in the front plate-like wall 18 and the frontmost plate-like wall 17. The other points are the same as those of the joined structure shown in FIG. 1, and the same parts as those in FIG.
In the joint structure shown in FIG. 4, the bottom 9 of the second member 2 is in contact with the plate-like wall 18 by surface contact. However, if necessary for design, a hole through which the body portion 8 of the second member 2 penetrates is also formed in the plate-like wall 18, and the bottom 9 of the second member 2 is brought into contact with the plate-like wall 17 at the most front side. You can also touch. If there is a need for design, the first member having a larger number of plate-like walls, for example, having a substantially cross section can be used.

図５に示す接合構造体は、第１部材１がＣチャンネル形であり、前後の板状壁２３，２４とそれらを接合する板状の接続壁２５からなる。その他の点は図１に示す接合構造体と同じであり、同じ部位には図１と同じ番号を付与している。本発明は、このように中空断面を有しない第１部材に対しても適用できる。 In the joint structure shown in FIG. 5, the first member 1 has a C channel shape, and includes front and rear plate-like walls 23 and 24 and plate-like connection walls 25 that join them. The other points are the same as those of the joined structure shown in FIG. 1, and the same parts as those in FIG. The present invention can also be applied to the first member having no hollow cross section.

なお、図３（ｂ），（ｃ）は、本発明に利用できる筒状素材の他の例である。図３（ｂ）に示す筒状素材２６は、押出パイプからなる胴部２７の端部に円形の板を溶接接合して底２８を形成したものであり、図３（ｃ）に示す筒状素材２９は、押出パイプからなる胴部３１の端部に鍛造又は絞り成形した浅いカップ状の部材３３を被せて底３１を形成したものである。筒状素材２９は、胴部３１の先端がカップ状の部材３３の底に当たっている必要がある。カップ状の部材３３は筒状素材２９の胴部３１の一部をなし、かつ底３１を構成する。 FIGS. 3B and 3C are other examples of cylindrical materials that can be used in the present invention. A cylindrical material 26 shown in FIG. 3 (b) is formed by welding a circular plate to the end of a body portion 27 made of an extruded pipe to form a bottom 28. The cylindrical material shown in FIG. 3 (c). The material 29 is formed by covering a shallow cup-shaped member 33 that is forged or drawn on the end portion of the body portion 31 made of an extruded pipe to form the bottom 31. The tubular material 29 needs to have the tip of the body portion 31 abutted against the bottom of the cup-shaped member 33. The cup-shaped member 33 constitutes a part of the body portion 31 of the tubular material 29 and constitutes the bottom 31.

図６に示す接合構造体は、第１部材１が略日形断面を有し、前後の板状壁３４〜３６とそれらを接続する板状の接続壁３７，３８からなる。最も後方側の板状壁３６とその前方側の板状壁３５に第２部材２の胴部８が貫入する穴３９が形成され、最も前方側の板状壁３４には穴が形成されていない。第２部材２は、図３（ｃ）に示す筒状素材２９の胴部３１が電磁成形により拡管されたものであり、カップ状の部材３３も一緒に拡管されている。板状壁３４，３５に形成された穴３９は同径とされ、筒状素材２９の一部であるカップ状の部材３３の外径は、穴３９より若干小径とされている。また、カップ状の部材３３の長さは、板状壁３４，３５の間隔よりやや大きく形成されている。 In the joined structure shown in FIG. 6, the first member 1 has a substantially square cross section, and includes front and rear plate-like walls 34 to 36 and plate-like connection walls 37 and 38 that connect them. A hole 39 through which the body portion 8 of the second member 2 penetrates is formed in the plate-like wall 36 on the most rear side and the plate-like wall 35 on the front side thereof, and a hole is formed in the plate-like wall 34 on the most front side. Absent. The second member 2 is obtained by expanding the body portion 31 of the cylindrical material 29 shown in FIG. 3C by electromagnetic forming, and the cup-shaped member 33 is also expanded. The holes 39 formed in the plate-like walls 34 and 35 have the same diameter, and the outer diameter of the cup-shaped member 33 that is a part of the cylindrical material 29 is slightly smaller than the holes 39. The length of the cup-shaped member 33 is slightly larger than the interval between the plate-like walls 34 and 35.

筒状素材２９を第１部材１の穴３９に通し、底３２を最も前方側の板状壁３４の内面に当接させ、以後は定法に従い、胴部３１の一部周囲を金型４１で包囲し、筒状素材２６の内部にコイル体４２を挿入し、コイル体４２に瞬間大電流を流し、筒状素材２９を拡管する。これにより得られた第２部材２は、底４４が最も前方側の板状壁３４の内面に面接触で当接し、胴部４３が板状壁３５，３６に形成された穴３９に貫入しかつその内周面に密着し、板状壁３５，３６（穴３９，３９）の前後で外径方向に拡がり（ただし、板状壁３４，３５の間及び板状壁３５，３６の間では胴部４３が全体的に外径方向に張り出している点で、図１に記載した第２部材の形態と異なる）、さらに開放端が拡開して、フランジ４３ａが形成されている。
なお、この電磁成形により、カップ状の部材３３（図３（ｃ）参照）が板状壁３５に形成された穴３９の内周面に密着し、かつ押出パイプ３１（図３（ｃ）参照）がカップ状の部材３３の内周面に密着し、さらに押出パイプ３１とカップ状の部材３３が同時に板状壁３５の前後で外径方向に張り出すので、筒状素材２９を構成していたカップ状の部材３３と押出パイプ３１も強固に接合される。
必要があれば、さらに第１部材１の板状壁３４と第２部材２の底４４をボルト接合することもできる。この例では、仮想線で示す別の部材４０を板状壁３４の前面側に密着して配置し、一緒にボルト接合をしている。 The tubular material 29 is passed through the hole 39 of the first member 1, the bottom 32 is brought into contact with the inner surface of the frontmost plate-like wall 34, and thereafter, a part of the body 31 is surrounded by a mold 41 according to a standard method. The coil body 42 is inserted into the inside of the cylindrical material 26, an instantaneous large current is passed through the coil body 42, and the tubular material 29 is expanded. As for the 2nd member 2 obtained by this, the bottom 44 contact | abuts to the inner surface of the foremost plate-shaped wall 34 by surface contact, and the trunk | drum 43 penetrates into the hole 39 formed in the plate-shaped walls 35 and 36. And it adheres closely to the inner peripheral surface and expands in the outer diameter direction before and after the plate-like walls 35 and 36 (holes 39 and 39) (however, between the plate-like walls 34 and 35 and between the plate-like walls 35 and 36) 1 is different from the configuration of the second member described in FIG. 1 in that the body portion 43 protrudes in the outer diameter direction as a whole, and the open end is further expanded to form a flange 43a.
By this electromagnetic forming, the cup-shaped member 33 (see FIG. 3C) comes into close contact with the inner peripheral surface of the hole 39 formed in the plate-like wall 35, and the extruded pipe 31 (see FIG. 3C). ) Is in close contact with the inner peripheral surface of the cup-shaped member 33, and the extruded pipe 31 and the cup-shaped member 33 are projected in the outer diameter direction before and after the plate-like wall 35 at the same time. The cup-shaped member 33 and the extruded pipe 31 are also firmly joined.
If necessary, the plate-like wall 34 of the first member 1 and the bottom 44 of the second member 2 can be further bolted together. In this example, another member 40 indicated by an imaginary line is disposed in close contact with the front side of the plate-like wall 34 and is bolted together.

図７に示す接合構造体は、第１部材１がＣチャンネル形であり、前後の板状壁４５，４６とそれらを接合する板状の接続壁４７からなり、後方側の板状壁４６に第２部材２の胴部４８が貫入する円形の穴５１が長さ方向に適宜間隔で形成されている。第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。ただし、この接合構造体の製造に用いる筒状素材１２は、胴部１３の長さが板状壁４５，４６間の距離より若干長いだけであり、筒状素材１２を第１部材１の穴５１を通し、底１４を前方側の板状壁４５の内面に当接させたとき、胴部１３は後方側の板状壁４６から後方側にわずか突出しているに過ぎない。 In the joining structure shown in FIG. 7, the first member 1 has a C channel shape, and includes front and rear plate-like walls 45 and 46 and a plate-like connection wall 47 that joins them. Circular holes 51 through which the body portion 48 of the second member 2 penetrates are formed at appropriate intervals in the length direction. The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. However, the cylindrical raw material 12 used for manufacturing the joined structure is such that the length of the body portion 13 is slightly longer than the distance between the plate-like walls 45 and 46, and the cylindrical raw material 12 is formed in the hole of the first member 1. 51, when the bottom 14 is brought into contact with the inner surface of the plate-like wall 45 on the front side, the body 13 protrudes only slightly from the plate-like wall 46 on the rear side to the rear side.

この筒状素材１２を第１部材１の各穴５１に通し、底１４を前方側の板状壁４５の内面に当接させ、以後は定法に従い、筒状素材１２の内部にコイル体５２を挿入し、コイル体５２に瞬間大電流を流し、筒状素材１２を拡管する。これにより得られた第２部材２は、底４９が前方側の板状壁４５の内面に面接触で当接し、胴部４８が板状壁４６に形成された穴５１に貫入しかつその内周面に密着し、板状壁４６（穴５１）の前後で外径方向拡がり（ただし、前後の板状壁４５，４６の間では胴部４８が全体的に外径方向に張り出し（張出部４８ａ）、板状壁４６の後方側では胴部４８の開放側の端部が拡開して、フランジ４８ａが形成されている点で、図１に記載した第２部材の形態と異なる）、かつフランジ４８ａは後方側の板状壁４６に後方側から当接する。張出部４８ａとフランジ４８ａは、図１の第２部材の張出部８ａ，８ｂと同様に、第２部材１の胴部４８と板状壁４６の接合を強化する。 This cylindrical material 12 is passed through each hole 51 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the plate-like wall 45 on the front side. Thereafter, the coil body 52 is placed inside the cylindrical material 12 according to a conventional method. Inserted, a large current is passed through the coil body 52, and the tubular material 12 is expanded. In the second member 2 obtained in this manner, the bottom 49 comes into contact with the inner surface of the front plate-like wall 45 by surface contact, and the body portion 48 penetrates into the hole 51 formed in the plate-like wall 46 and includes the inside thereof. Adhering closely to the peripheral surface, it expands in the outer diameter direction before and after the plate-like wall 46 (hole 51) (however, the body portion 48 generally projects in the outer-diameter direction between the front and rear plate-like walls 45, 46) 48a), and the rear side of the plate-like wall 46 is different from the form of the second member shown in FIG. 1 in that the end on the open side of the body 48 is expanded to form a flange 48a). And the flange 48a contacts the plate-like wall 46 on the rear side from the rear side. The overhang portion 48a and the flange 48a reinforce the bonding between the body portion 48 of the second member 1 and the plate-like wall 46, like the overhang portions 8a and 8b of the second member in FIG.

なお、この接合構造体では、第２部材２の胴部４８が板状壁４５，４６の間において全体的に外径方向に張り出しているが、図１に示す接合構造体における第２部材の張出部８ａのように、板状壁４６の近傍のみが張り出していてもよい。
図７に示す接合構造体は、第１部材１を第２部材２により補強したもので、第２部材２は、胴部４８が第１部材１の後方側の板状壁４６に穴５１の部分で固定され、かつ底４９が前方側の板状壁４５に当接しているため、第１部材１と第２部材２の接合は強固で安定している。 Note that in this joined structure, the body portion 48 of the second member 2 protrudes in the entire outer diameter direction between the plate-like walls 45, 46, but the second member in the joined structure shown in FIG. Like the overhang portion 8a, only the vicinity of the plate wall 46 may overhang.
The joining structure shown in FIG. 7 is obtained by reinforcing the first member 1 with the second member 2, and the second member 2 has a body portion 48 with a hole 51 in the plate-like wall 46 on the rear side of the first member 1. Since the portion 49 is fixed and the bottom 49 is in contact with the plate-like wall 45 on the front side, the joining of the first member 1 and the second member 2 is strong and stable.

図８に示す接合構造体は、変形Ｃチャンネル形のアルミニウム合金押出材からなる第１部材１と、日形断面を有するアルミニウム合金押出材からなる第３部材３を、有底筒状のアルミニウム合金からなる第２部材２で接合したものである。
第１部材１は、前後の板状壁５３〜５５とそれらを接続する板状の接続壁５６，５７からなり、最も後方側の板状壁５５と中間の板状壁５４に第２部材２の胴部５８が貫入する円形の穴６１が形成されている。第３部材３は、前後の板状壁６２〜６４とそれらを接続する板状の接続壁６５，６６からなり、全ての板状壁６２〜６４に前記穴６１と同径の穴６７が形成されている。穴６１と６７は前後方向に整合している。第３部材３は、前後方向の長さが第１部材の板状壁５４，５５の間隔とほぼ同じに設定され、板状壁５４，５５の隙間に収容され、第１部材１の板状壁５４（穴６１が開けられた最も前方側の板状壁）と第３部材の板状壁６２（穴６７が開けられた最も前方側の板状壁）が面接触で当接し、かつ第１部材１の板状壁５５（穴６１が開けられた最も後方側の板状壁）と第３部材の板状壁６４（穴６７が開けられた最も後方側の板状壁）が面接触で当接している。次に説明するように、板状壁６２と板状壁５４及び板状壁６４と板状壁５５は、電磁成形により拡管した第２部材２によって互いに接合されている。 The joined structure shown in FIG. 8 includes a first member 1 made of a deformed C-channel aluminum alloy extruded material and a third member 3 made of an aluminum alloy extruded material having a day-shaped cross section. It joins with the 2nd member 2 which consists of.
The first member 1 is composed of front and rear plate-like walls 53 to 55 and plate-like connection walls 56 and 57 that connect them, and the second member 2 is arranged on the plate-like wall 55 and the middle plate-like wall 54 at the rearmost side. A circular hole 61 is formed through which the body portion 58 penetrates. The third member 3 includes front and rear plate-like walls 62 to 64 and plate-like connection walls 65 and 66 for connecting them, and a hole 67 having the same diameter as the hole 61 is formed in all the plate-like walls 62 to 64. Has been. The holes 61 and 67 are aligned in the front-rear direction. The length of the third member 3 in the front-rear direction is set to be substantially the same as the interval between the plate-like walls 54 and 55 of the first member, and is accommodated in the gap between the plate-like walls 54 and 55. The wall 54 (the foremost plate-like wall having the hole 61) and the plate-like wall 62 of the third member (the foremost plate-like wall having the hole 67) are in contact with each other by surface contact, and the first The plate-like wall 55 of the one member 1 (the rearmost plate-like wall with the hole 61 opened) and the plate-like wall 64 of the third member (the rearmost plate-like wall with the hole 67 opened) are in surface contact. In contact. As will be described next, the plate-like wall 62 and the plate-like wall 54 and the plate-like wall 64 and the plate-like wall 55 are joined to each other by the second member 2 expanded by electromagnetic forming.

第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。ここで、筒状素材１２は、胴部１３の長さが板状壁５３，５５間の距離より若干長く、第１部材１の穴６１及び第３部材の穴６７に通し、底１４を第１部材１の最も前方側の板状壁５３の内面に当接させたとき、胴部１３は最も後方側の板状壁５５から後方側にわずか突出している。
筒状素材１２を第１部材１の穴６１及び第３部材の穴６７に通し、底１４を前方側の板状壁５３の内面に当接させ、以後は定法に従い、筒状素材１２の内部に図示しないコイル体を挿入し、コイル体に瞬間大電流を流し、筒状素材１２を拡管する。これにより得られた第２部材２は、底５９が第１部材１の前方側の板状壁５３の内面に面接触で当接し、胴部５８が板状壁５４，５５に形成された穴６１及び板状壁６２〜６４に形成された穴６７に貫入しかつその内周面に密着し、板状壁５４と６２（穴６１と６７），６３（穴６７），６４と５５（穴６１と６７）の前後において外径方向に拡がり（板状壁５３と５４の間、板状壁６２と６３の間及び板状壁６３と６４の間で胴部５８が全体的に外径方向に張り出し、開放端が拡開してフランジ５８ａが形成されている）、かつフランジ５８ａは第１部材１の最も後方側の板状壁５５（第１部材１と第３部材３の板状壁のうち最も後方側の板状壁）に後方側から当接する。 The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, the length of the barrel portion 13 is slightly longer than the distance between the plate-like walls 53 and 55, and the tubular material 12 passes through the hole 61 of the first member 1 and the hole 67 of the third member, and the bottom 14 passes through the bottom 14. When being brought into contact with the inner surface of the frontmost plate-like wall 53 of the one member 1, the body portion 13 slightly protrudes rearward from the rearmost plate-like wall 55.
The tubular material 12 is passed through the hole 61 of the first member 1 and the hole 67 of the third member, and the bottom 14 is brought into contact with the inner surface of the plate-like wall 53 on the front side. A coil body (not shown) is inserted into the coil body, an instantaneous large current is passed through the coil body, and the tubular material 12 is expanded. In the second member 2 obtained in this manner, the bottom 59 comes into contact with the inner surface of the plate-like wall 53 on the front side of the first member 1 by surface contact, and the body portion 58 is a hole formed in the plate-like walls 54 and 55. 61 and the holes 67 formed in the plate-like walls 62 to 64 are in close contact with the inner peripheral surface thereof, and the plate-like walls 54 and 62 (holes 61 and 67), 63 (hole 67), 64 and 55 (holes). 61 and 67) expands in the outer diameter direction (between the plate-like walls 53 and 54, between the plate-like walls 62 and 63, and between the plate-like walls 63 and 64, and the whole body 58 is in the outer-diameter direction. The flange 58a is formed with the open end widened, and the flange 58a is a plate-like wall 55 on the rearmost side of the first member 1 (plate-like walls of the first member 1 and the third member 3). (A plate-like wall on the most rear side) from the rear side.

図９に示す接合構造体は、第１部材１が略口形断面を有し、前後の板状壁６８，６９とそれらを接続する板状の接続壁７１，７２からなる点で、図８に示す接合構造体と異なり、他の点はほぼ同じである。
第１部材１は、後方側の板状壁６９に第２部材２の胴部７３が貫通する穴７５が形成され、前方の板状壁６８には穴が形成されていない。第３部材３は、図８に示す第３部材と同じで、第１部材１の板状壁６９と第３部材の板状壁６２が面接触で当接し、電磁成形により拡管した第２部材２によって互いに接合されている。 The joining structure shown in FIG. 9 has a substantially mouth-shaped cross section, and is composed of front and rear plate-like walls 68 and 69 and plate-like connection walls 71 and 72 connecting them. Unlike the joint structure shown, the other points are almost the same.
In the first member 1, a hole 75 through which the body portion 73 of the second member 2 passes is formed in the rear plate-like wall 69, and no hole is formed in the front plate-like wall 68. The third member 3 is the same as the third member shown in FIG. 8, and the plate-like wall 69 of the first member 1 and the plate-like wall 62 of the third member are in contact with each other by surface contact, and the second member is expanded by electromagnetic forming. 2 are joined together.

第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。ここで、筒状素材１２は、胴部１３の長さが板状壁６８，６４間の距離より若干長く、第３部材３の穴６７及び第１部材の穴７５を通し、底７４を第１部材１の前方側の板状壁６８の内面に当接させたとき、胴部１３は第３部材３の最も後方側の板状壁６４から後方側にわずか突出している。
筒状素材１２を電磁成形により拡管して得られた第２部材２は、底７４が第１部材の前方側の板状壁６８の内面に面接触で当接し、胴部７３が板状壁６２〜６４に形成された穴６７及び板状壁６９に形成された穴７５に貫入しかつその内周面に密着し、板状壁６９と６２（穴７５と６７），６３（穴６７），６４（穴６７）の前後において外径方向に拡がり（板状壁６８と６９の間、板状壁６２と６３の間及び板状壁６３と６４の間で胴部７３が全体的に外径方向に張り出り、開放端が拡開してフランジ７３ａが形成されている）、かつフランジ７３ａは第３部材３の最も後方側の板状壁６４（第１部材１と第３部材３の板状壁のうち最も後方側の板状壁）に後方側から当接する。 The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, in the cylindrical material 12, the length of the body portion 13 is slightly longer than the distance between the plate-like walls 68 and 64, the hole 67 of the third member 3 and the hole 75 of the first member 3 are passed, and the bottom 74 is passed through the bottom 74. When contacting the inner surface of the plate-like wall 68 on the front side of the one member 1, the trunk portion 13 slightly protrudes rearward from the plate-like wall 64 on the most rear side of the third member 3.
In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 74 abuts the inner surface of the plate-like wall 68 on the front side of the first member by surface contact, and the body portion 73 has a plate-like wall. It penetrates into the hole 67 formed in 62-64 and the hole 75 formed in the plate-shaped wall 69, and it adheres to the inner peripheral surface, and plate-shaped walls 69 and 62 (holes 75 and 67), 63 (hole 67) , 64 (hole 67) and expands in the outer diameter direction (between plate-like walls 68 and 69, between plate-like walls 62 and 63, and between plate-like walls 63 and 64) The flange 73a is formed by projecting in the radial direction, the open end is widened, and the flange 73a is a plate-like wall 64 (the first member 1 and the third member 3) on the rearmost side of the third member 3. Of the plate-like walls from the rear side.

図１０に示す接合構造体は、変形Ｃチャンネル形の第１部材１と、口形断面を有する第３部材３を、有底筒状の第２部材２で接合したものである。
第１部材１は、前後の板状壁７６〜７８とそれらを接続する板状の接続壁７９，８１からなり、最も後方側の板状壁７８と中間の板状壁７９に第２部材２の胴部８２が貫入する円形の穴８４が形成され、最も前方側の板状壁７６には穴が形成されていない。第３部材３は、前後の板状壁８５，８６とそれらを接続する板状の接続壁８７，８８からなり、両板状壁８５，８６に前記穴８４と同径の穴８９が形成されている。穴８４と８９は前後方向に整合している。図８に記載された接合構造体と同じく、第１部材１の板状壁７７と第３部材の板状壁８５が面接触で当接し、かつ第１部材１の板状壁７８と第３部材の板状壁８６が面接触で当接し、板状壁７７と板状壁８５及び板状壁７８と板状壁８６は、電磁成形により拡管した第２部材２によって互いに接合されている。 The joining structure shown in FIG. 10 is obtained by joining a deformed C-channel first member 1 and a third member 3 having a mouth-shaped cross section with a bottomed cylindrical second member 2.
The first member 1 includes front and rear plate-like walls 76 to 78 and plate-like connection walls 79 and 81 that connect them, and the second member 2 is arranged on the plate-like wall 78 on the most rear side and the plate-like wall 79 in the middle. A circular hole 84 through which the body portion 82 penetrates is formed, and no hole is formed in the frontmost plate-like wall 76. The third member 3 includes front and rear plate-like walls 85 and 86 and plate-like connection walls 87 and 88 that connect them. Holes 89 having the same diameter as the hole 84 are formed in both plate-like walls 85 and 86. ing. The holes 84 and 89 are aligned in the front-rear direction. Similar to the joint structure described in FIG. 8, the plate-like wall 77 of the first member 1 and the plate-like wall 85 of the third member abut on each other in surface contact, and the plate-like wall 78 of the first member 1 and the third wall 1. The plate-like walls 86 of the members are brought into contact with each other by surface contact, and the plate-like wall 77 and the plate-like wall 85 and the plate-like wall 78 and the plate-like wall 86 are joined to each other by the second member 2 expanded by electromagnetic forming.

第２部材２は、図３（ｃ）に示す筒状素材２９の胴部３１が電磁成形により拡管されたものであり、カップ状の部材３３も一緒に拡管されている。筒状素材２９の一部であるカップ状の部材３３の外径は、穴８４，８９より若干小径とされ、カップ状の部材３３の長さは、板状壁７６，７７の間隔よりやや大きく形成されている。
筒状素材２９を電磁成形により拡管して得られた第２部材２は、底８３が第１部材１の最も前方側の板状壁７６の内面に面接触で当接し、胴部８２が板状壁７７，７８に形成された穴８４及び板状壁８５，８６に形成された穴８９に貫入しかつその内周面に密着し、板状壁７７と８５（穴８４と８９）及び７８と８６（穴８４と８９）の前後において外径方向に拡がり（板状壁７６と７７の間及び板状壁８５と８６の間で胴部８２が全体的に外径方向に張り出り、開放端が拡開してフランジ８２ａが形成されている）、かつフランジ８２ａは第１部材１の最も後方側の板状壁７８に後方側から当接する。 The second member 2 is obtained by expanding the body portion 31 of the cylindrical material 29 shown in FIG. 3C by electromagnetic forming, and the cup-shaped member 33 is also expanded. The outer diameter of the cup-shaped member 33 that is a part of the cylindrical material 29 is slightly smaller than the holes 84 and 89, and the length of the cup-shaped member 33 is slightly larger than the interval between the plate-shaped walls 76 and 77. Is formed.
In the second member 2 obtained by expanding the tubular material 29 by electromagnetic forming, the bottom 83 comes into contact with the inner surface of the frontmost plate-like wall 76 of the first member 1 by surface contact, and the body portion 82 is a plate. The plate-like walls 77 and 85 (holes 84 and 89) and 78 penetrate into the holes 84 formed in the wall-like walls 77 and 78 and the holes 89 formed in the plate-like walls 85 and 86 and are in close contact with the inner peripheral surface thereof. And 86 (holes 84 and 89) before and after expanding in the outer radial direction (between the plate-like walls 76 and 77 and between the plate-like walls 85 and 86, the body portion 82 generally projects in the outer radial direction, The open end is widened to form a flange 82a), and the flange 82a abuts against the rearmost plate-like wall 78 of the first member 1 from the rear side.

なお、この電磁成形により、カップ状の部材３３（図３（ｃ）参照）が板状壁７７に形成された穴８４と板状壁８５に形成された穴８９の内周面に密着し、かつ押出パイプ３１（図３（ｃ）参照）がカップ状の部材３３の内周面に密着し、さらに押出パイプ３１とカップ状の部材３３が同時に板状壁７７，８５の前後で外径方向に張り出すので、筒状素材２６を構成していたカップ状の部材３３と押出パイプ３１も強固に接合される。 By this electromagnetic forming, the cup-shaped member 33 (see FIG. 3C) is in close contact with the inner peripheral surface of the hole 84 formed in the plate-like wall 77 and the hole 89 formed in the plate-like wall 85, In addition, the extruded pipe 31 (see FIG. 3C) is in close contact with the inner peripheral surface of the cup-shaped member 33, and the extruded pipe 31 and the cup-shaped member 33 are simultaneously in the outer diameter direction before and after the plate-like walls 77 and 85. Therefore, the cup-shaped member 33 and the extruded pipe 31 constituting the tubular material 26 are also firmly joined.

図１１に示す接合構造体は、変形Ｃチャンネル形のアルミニウム合金押出材からなる第１部材１と、板状の第３部材３を、有底筒状の第２部材２で接合したものである。
第１部材１は、前後の板状壁９１，９２とそれらを接続する板状の接続壁９３、及び接続壁９３に形成された高さの低い突条９４からなり、後方側の板状壁９２に第２部材２の胴部９５が貫入する円形の穴９７が形成され、前方側の板状壁９１には穴が形成されていない。第３部材３は１個の板状壁９８からなり、該板状壁９８に前記穴９７と同径の穴９９が形成され、第１部材１の後方側の板状壁９２と面接触で当接し、板状壁９２と板状壁９８は、電磁成形により拡管した第２部材２によって互いに接合されている。 The joined structure shown in FIG. 11 is obtained by joining a first member 1 made of a deformed C channel type aluminum alloy extruded material and a plate-like third member 3 with a bottomed cylindrical second member 2. .
The first member 1 includes front and rear plate-like walls 91, 92, a plate-like connection wall 93 connecting them, and a protrusion 94 having a low height formed on the connection wall 93, and a plate-like wall on the rear side. A circular hole 97 through which the body portion 95 of the second member 2 penetrates is formed in 92, and no hole is formed in the plate-like wall 91 on the front side. The third member 3 is composed of one plate-like wall 98, and a hole 99 having the same diameter as the hole 97 is formed in the plate-like wall 98, and is in surface contact with the plate-like wall 92 on the rear side of the first member 1. The plate-like wall 92 and the plate-like wall 98 are in contact with each other by the second member 2 expanded by electromagnetic forming.

第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。筒状素材１２を電磁成形により拡管して得られた第２部材２は、底９６が前方側の板状壁９１の内面に面接触で当接し、胴部９５が第１部材１の板状壁９２に形成された穴９７と第２部材２の板状壁９８に形成された穴９９に貫入し、かつその内周面に密着し、板状壁９２と９８（穴９７と９９）の前後で外径方向に拡がり（板状壁９１と９８の間では胴部９５が全体的に外径方向に張り出し、開放側の端部が拡開して、フランジ９５ａが形成されている）、かつフランジ９５ａは第１部材１の後方側の板状壁９２に後方側から当接する。
なお、図１１に示す接合構造体では、板状壁９８の端部が板状壁９２と突条９４の間に嵌入し、これにより第１部材１と第３部材３の接合を補助している。 The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 96 comes into contact with the inner surface of the plate-like wall 91 on the front side, and the body portion 95 is a plate-like shape of the first member 1. The hole 97 formed in the wall 92 and the hole 99 formed in the plate-like wall 98 of the second member 2 are penetrated and closely adhered to the inner peripheral surface thereof, so that the plate-like walls 92 and 98 (holes 97 and 99) are formed. It expands in the outer diameter direction at the front and rear (between the plate-like walls 91 and 98, the body portion 95 generally projects in the outer diameter direction, the open end is expanded, and a flange 95a is formed). The flange 95a abuts against the plate-like wall 92 on the rear side of the first member 1 from the rear side.
In the joined structure shown in FIG. 11, the end of the plate-like wall 98 is fitted between the plate-like wall 92 and the protrusion 94, thereby assisting the joining of the first member 1 and the third member 3. Yes.

図１２に示す接合構造体は、いずれもＣチャンネル形のアルミニウム合金押出材からなる第１部材１と第３部材を、有底筒状のアルミニウム合金からなる第２部材２で接合したものである。
第１部材１は、前後の板状壁１０１，１０２とそれらを接続する板状の接続壁１０３からなり、後方側の板状壁１０２に第２部材２の胴部１０４が貫入する円形の穴１０６が形成されている。第３部材３は、前後の板状壁１０７，１０８とそれらを接続する板状の接続壁１０９からなり、後方側の板状壁１０８に前記穴１０６と同径の穴１１１が形成され、前方側の板状壁１０７には穴が形成されていない。第３部材３は、前後方向の幅が第１部材１の板状壁１０１，１０２の間隔とほぼ同じに設定され、板状壁１０１，１０２の隙間に収容され、第３部材３の板状壁１０７が第１部材１の前方側の板状壁１０１に、面接触で当接し、さらに第３部材の板状壁１０８が第１部材１の後方側の板状壁１０２に面接触で当接している。次に説明するように、板状壁１０２と板状壁１０８は、電磁成形により拡管した第２部材２によって互いに接合されている。 The joined structure shown in FIG. 12 is obtained by joining the first member 1 and the third member made of a C channel-type aluminum alloy extruded material with the second member 2 made of a bottomed cylindrical aluminum alloy. .
The first member 1 includes front and rear plate-like walls 101 and 102 and a plate-like connection wall 103 that connects them, and a circular hole through which the body portion 104 of the second member 2 penetrates the plate-like wall 102 on the rear side. 106 is formed. The third member 3 is composed of front and rear plate-like walls 107 and 108 and a plate-like connection wall 109 that connects them, and a hole 111 having the same diameter as the hole 106 is formed in the plate-like wall 108 on the rear side. No hole is formed in the plate-like wall 107 on the side. The width of the third member 3 in the front-rear direction is set to be substantially the same as the interval between the plate-like walls 101 and 102 of the first member 1, and is accommodated in the gap between the plate-like walls 101 and 102. The wall 107 abuts on the plate-like wall 101 on the front side of the first member 1 by surface contact, and the plate-like wall 108 of the third member abuts on the plate-like wall 102 on the rear side of the first member 1 by surface contact. It touches. As will be described next, the plate-like wall 102 and the plate-like wall 108 are joined to each other by the second member 2 expanded by electromagnetic forming.

第２部材２は、図３（ａ）に示す筒状素材１２の胴部１３が電磁成形により拡管されたものである。ここで、筒状素材１２の胴部１３の外径は前記穴１０６，１１１の内径より若干小径であり、胴部１３の長さは板状壁１０１，１０２間の距離より長い。従って、筒状素材１２を第１部材１の穴１０６及び第３部材の穴１１１に通し、底１４を第３部材の前方側の板状壁１０７の内面に当接させたとき、胴部１３は第１部材の後方側の板状壁１０２から後方側にかなりの長さで突出している。 The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, the outer diameter of the barrel portion 13 of the cylindrical material 12 is slightly smaller than the inner diameter of the holes 106 and 111, and the length of the barrel portion 13 is longer than the distance between the plate-like walls 101 and 102. Therefore, when the cylindrical material 12 is passed through the hole 106 of the first member 1 and the hole 111 of the third member, and the bottom 14 is brought into contact with the inner surface of the plate-like wall 107 on the front side of the third member, the body 13 Projecting from the plate-like wall 102 on the rear side of the first member to the rear side with a considerable length.

筒状素材１２を電磁成形により拡管して得られた第２部材２は、底１０５が第３部材３の前方側の板状壁１０７の内面に面接触で当接し、胴部１０４が板状壁１０２に形成された穴１０６及び板状壁１０８に形成された穴１１１に貫入しかつその内周面に密着し、板状壁１０８と１０２（穴１１１と１０６）の前後において外径方向に拡がり（張出部１０４ａ，１０４ｂが形成されている）、さらに開放側の端部が拡開して、フランジ１０４ｃが形成されている。フランジ１０４ｃは他部材への接合用フランジとして利用される。
図１２に示す接合構造体では、第１部材１の前方側の板状壁１０１に第３部材３の前方側の板状壁１０７が当接し、さらに第２部材２の底１０５が板状壁１０７に後方側から当接し、一方、板状壁１０２と板状壁１０８が第２部材２によって互いに接合されるため、第１部材１と第３部材３は強固に接合される。必要があれば、第１部材１の板状壁１０１と第３部材２の板状壁１０７及び第２部材の底１０５をボルト締めすることができる。 In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 105 comes into contact with the inner surface of the plate-like wall 107 on the front side of the third member 3 by surface contact, and the body portion 104 is plate-like. It penetrates into the hole 106 formed in the wall 102 and the hole 111 formed in the plate-like wall 108 and is in close contact with the inner peripheral surface thereof, and in the outer diameter direction before and after the plate-like walls 108 and 102 (holes 111 and 106). The flange 104c is formed by expanding (the overhang portions 104a and 104b are formed), and further opening the end on the open side. The flange 104c is used as a flange for joining to other members.
In the joint structure shown in FIG. 12, the plate-like wall 107 on the front side of the third member 3 abuts on the plate-like wall 101 on the front side of the first member 1, and the bottom 105 of the second member 2 further has a plate-like wall. Since the plate-like wall 102 and the plate-like wall 108 are joined to each other by the second member 2, the first member 1 and the third member 3 are firmly joined. If necessary, the plate-like wall 101 of the first member 1, the plate-like wall 107 of the third member 2, and the bottom 105 of the second member can be bolted.

本発明に係る接合構造体の断面図である。It is sectional drawing of the junction structure concerning this invention. その接合構造体の９０度異なる断面での断面図である。It is sectional drawing in a 90-degree different cross section of the joining structure. 本発明に用いられる筒状素材の断面図である。It is sectional drawing of the cylindrical raw material used for this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention. 本発明に係る別の接合構造体の断面図である。It is sectional drawing of another junction structure which concerns on this invention.

符号の説明Explanation of symbols

１第１部材
２第２部材
３第３部材
４，５，１７〜１９，２３，２４，３４〜３６，４５，４６，５３，５４，６８，６９，７６〜７８，９１，９２，１０１，１０２第１部材の板状壁
８，４３，５８，７３，８２，９５，１０４第２部材の胴部
９，４４，５９，７４，８３，９６，１０５第２部材の底
１１，２０，３９，５１，６１，７５，８４，９７，１０６第１部材に形成された穴
６７，８９，９９，１１１第２部材に形成された穴
６２〜６４，８５，８６，９８，１０７，１０８第３部材の板状壁 DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 3 3rd member 4,5,17-19,23,24,34-36,45,46,53,54,68,69,76-78,91,92,101, 102 Plate-like wall of the first member 8, 43, 58, 73, 82, 95, 104 Body portion of the second member 9, 44, 59, 74, 83, 96, 105 Bottom of the second member 11, 20, 39 , 51, 61, 75, 84, 97, 106 Holes 67, 89, 99, 111 formed in the first member 62-64, 85, 86, 98, 107, 108 Third hole formed in the second member Member plate wall

Claims

前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、及び一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、前記穴の全てに第２部材の胴部が貫入し、かつ前記穴が形成されていない板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、板状壁に形成された前記穴の内周面に密着していることを特徴とする接合構造体。 A metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, and a second member made of a bottomed cylindrical aluminum alloy with one end closed and the other end opened; A hole through which the body of the second member penetrates is formed in one or more plate-like walls on the rear side of the first member, and the hole is not formed in the plate-like wall on the front side, and the holes The body of the second member penetrates into all, and the bottom of the second member comes into contact with the plate-like wall from which the hole is not formed from the rear side, and the body of the second member is expanded by electromagnetic forming, A bonded structure characterized by being in close contact with an inner peripheral surface of the hole formed in the plate-like wall.

第１部材が複数個の板状壁とこれを前後方向に接続する板状の接続壁を有する形材からなることを特徴とする請求項１に記載された接合構造体。 The joining structure according to claim 1, wherein the first member is formed of a shape having a plurality of plate-like walls and plate-like connection walls that connect the plate-like walls in the front-rear direction.

第１部材の最も前方側の板状壁にのみ前記穴が形成されていないことを特徴とする請求項１又は２に記載された接合構造体。 The joint structure according to claim 1 or 2, wherein the hole is not formed only in a plate-like wall on the foremost side of the first member.

前記電磁成形により拡管された第２部材の胴部が、前記穴の前後において前記穴より外径方向に拡がっていることを特徴とする請求項１〜３のいずれかに記載された接合構造体。 The joint structure according to any one of claims 1 to 3, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. .

第１部材の最も後方側の板状壁の後方に第２部材の胴部の開放端が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に前記板状壁に後方側から当接するフランジが形成されていることを特徴とする請求項４に記載された接合構造体。 The open end of the body part of the second member protrudes behind the plate wall on the most rear side of the first member, the projecting portion is expanded by the electromagnetic forming, and the open end of the body part is behind the plate wall. The joint structure according to claim 4, wherein a flange abutting from the side is formed.

第１部材の最も後方側の板状壁の後方に第２部材の胴部が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に他部材への接合用フランジが形成されていることを特徴とする請求項４に記載された接合構造体。 The body portion of the second member protrudes behind the plate wall on the most rear side of the first member, the protruding portion is expanded by the electromagnetic forming, and a flange for joining to another member is formed at the open end of the body portion. The bonded structure according to claim 4, wherein the bonded structure is formed.

第２部材の底と、それが当接する板状壁が互いに接合されていることを特徴とする請求項１〜６のいずれかに記載された接合構造体。 The joint structure according to any one of claims 1 to 6, wherein the bottom of the second member and the plate-like wall with which the second member abuts are joined to each other.

前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材、及び１個又は前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第３部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、第３部材の全部の板状壁に第２部材の胴部が貫入する穴が形成され、第３部材の板状壁は少なくとも１個が第１部材の前記穴が形成された板状壁に当接し、第１部材及び第３部材の前記穴の全てに第２部材の胴部が貫入し、かつ第１部材の前記穴が形成されていない板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、第１部材と第３部材の板状壁に形成された前記穴の内周面に密着していることを特徴とする接合構造体。 A metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottomed cylindrical aluminum alloy second member having one end closed and the other end opened, and one piece Or it consists of the metal 3rd member which has the some plate-shaped wall arrange | positioned at predetermined intervals back and forth, and the trunk | drum of a 2nd member is carried out to the 1 or 2 or more plate-shaped wall of the back side of a 1st member. A hole through which the body part penetrates is formed, the hole is not formed in the plate-like wall on the front side, and a hole through which the body part of the second member penetrates in all the plate-like walls of the third member; At least one plate-like wall of the third member contacts the plate-like wall of the first member in which the hole is formed, and the body of the second member penetrates all of the holes of the first member and the third member. In addition, the bottom of the second member comes into contact with the plate-like wall in which the hole of the first member is not formed from the rear side, and the body portion of the second member is electromagnetically molded. Ri is expanded pipe connection structure, characterized in that in close contact with the inner peripheral surface of the first member and the hole formed in a plate shape wall of the third member.

第１部材と第３部材が複数個の板状壁とこれを前後方向に接続する板状の接続壁を有する形材からなることを特徴とする請求項８に記載された接合構造体。 9. The joint structure according to claim 8, wherein the first member and the third member are formed of a shape having a plurality of plate-like walls and plate-like connection walls connecting the plate-like walls in the front-rear direction.

第１部材の最も前方側の板状壁にのみ前記穴が形成されていないことを特徴とする請求項８又は９に記載された接合構造体。 The joint structure according to claim 8 or 9, wherein the hole is not formed only in a plate-like wall on the foremost side of the first member.

第３部材が複数個の板状壁を有し、第１部材の前記穴が形成された２個の板状壁の間に配置され、その板状壁に第３部材の最も前方側と最も後方側の板状壁がそれぞれ当接していることを特徴とする請求項８〜１０のいずれかに記載された接合構造体。 The third member has a plurality of plate-like walls, and is disposed between the two plate-like walls in which the holes of the first member are formed. The joint structure according to claim 8, wherein the plate-like walls on the rear side are in contact with each other.

前記電磁成形により拡管された第２部材の胴部が、前記穴の前後において前記穴より外径方向に拡がっていることを特徴とする請求項８〜１１のいずれかに記載された接合構造体。 The joint structure according to any one of claims 8 to 11, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. .

第１部材及び第３部材の最も後方側の板状壁の後方に第２部材の胴部の開放端が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に前記板状壁に後方側から当接するフランジが形成されていることを特徴とする請求項１２に記載された接合構造体。 The open end of the body portion of the second member protrudes behind the plate-like wall on the most rear side of the first member and the third member, the projecting portion is expanded by the electromagnetic forming, and the plate is formed at the open end of the body portion. The joint structure according to claim 12, wherein a flange that abuts from the rear side is formed on the shaped wall.

第１部材及び第３部材の最も後方側の板状壁の後方に第２部材の胴部が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に他部材への接合用フランジが形成されていることを特徴とする請求項１２に記載された接合構造体。 The body part of the second member protrudes behind the plate wall on the most rear side of the first member and the third member, the projecting part is expanded by the electromagnetic forming, and is joined to another member at the open end of the body part. The joint structure according to claim 12, wherein a flange for use is formed.

第２部材の底と、それが当接する板状壁が互いに接合されていることを特徴とする請求項８〜１４のいずれかに記載された接合構造体。 The joint structure according to any one of claims 8 to 14, wherein the bottom of the second member and the plate-like wall with which the second member abuts are joined to each other.

前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第１部材、一端が閉じ他端が開放した有底筒状のアルミニウム合金製の第２部材、及び前後に所定の間隔を置いて配置された複数個の板状壁を有する金属製の第３部材からなり、第１部材の後方側の１又は２以上の板状壁に第２部材の胴部が貫入する穴が形成され、それより前方側の板状壁には前記穴は形成されず、第３部材の最も前方側の板状壁を除く全部の板状壁に第２部材の胴部が貫入する穴が形成され、第３部材の最も前方側の板状壁が第１部材の前記穴が形成されていない板状壁に後方側から当接し、第１部材及び第３部材の前記穴の全てに第２部材の胴部が貫入し、かつ第３部材の最も前方側の板状壁に第２部材の底が後方側から当接し、さらに第２部材の胴部が電磁成形により拡管され、第１部材と第３部材の板状壁に形成された前記穴の内周面に密着していることを特徴とする接合構造体。 A metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottomed cylindrical aluminum alloy second member in which one end is closed and the other end is opened, and front and rear It consists of a metal third member having a plurality of plate-like walls arranged at predetermined intervals, and the body of the second member penetrates into one or more plate-like walls on the rear side of the first member. The hole is formed in the plate-like wall on the front side, and the hole of the second member penetrates all the plate-like walls except the plate-like wall on the most front side of the third member. The plate-like wall on the foremost side of the third member abuts the plate-like wall of the first member on which the hole is not formed from the rear side, and the holes of the first member and the third member The body of the second member penetrates all, and the bottom of the second member comes into contact with the plate-like wall on the most front side of the third member from the rear side. Part is expanded pipe by electromagnetic forming, joining structure characterized by being in close contact with the inner peripheral surface of the hole formed in the plate-like wall of the first member and the third member.

第１部材と第３部材が複数個の板状壁とこれを前後方向に接続する板状の接続壁を有する形材からなることを特徴とする請求項１６に記載された接合構造体。 The joining structure according to claim 16, wherein the first member and the third member are formed of a shape having a plurality of plate-like walls and a plate-like connection wall connecting them in the front-rear direction.

第１部材の最も前方側の板状壁にのみ前記穴が形成されていないことを特徴とする請求項１６又は１７に記載された接合構造体。 18. The joint structure according to claim 16, wherein the hole is not formed only in the frontmost plate-like wall of the first member.

第３部材の前記穴が形成された板状壁の少なくとも１個が、第１部材の前記穴が形成された板状壁に当接していることを特徴とする請求項１６〜１８のいずれかに記載された接合構造体。 The at least one plate-like wall in which the hole of the third member is formed is in contact with the plate-like wall in which the hole of the first member is formed. The joint structure described in 1.

第３部材が第１部材の前記穴が形成されていない板状壁と前記穴が形成された板状壁の間に配置され、前記穴が形成された板状壁に第３部材の板状壁が当接していることを特徴とする請求項１９に記載された接合構造体。 The third member is disposed between the plate-like wall in which the hole of the first member is not formed and the plate-like wall in which the hole is formed, and the plate-like shape of the third member is formed on the plate-like wall in which the hole is formed. The joining structure according to claim 19, wherein the walls are in contact with each other.

前記電磁成形により拡管された第２部材の胴部が、前記穴の前後において前記穴より外径方向に拡がっていることを特徴とする請求項１６〜２０のいずれかに記載された接合構造体。 The joint structure according to any one of claims 16 to 20, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. .

第１部材及び第３部材の最も後方側の板状壁の後方に第２部材の胴部の開放端が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に前記板状壁に後方側から当接するフランジが形成されていることを特徴とする請求項２１に記載された接合構造体。 The open end of the body portion of the second member protrudes behind the plate-like wall on the most rear side of the first member and the third member, the projecting portion is expanded by the electromagnetic forming, and the plate is formed at the open end of the body portion. The joint structure according to claim 21, wherein a flange that abuts from the rear side is formed on the shaped wall.

第１部材及び第３部材の最も後方側の板状壁の後方に第２部材の胴部が突出し、突出部分が前記電磁成形により拡管されて、前記胴部の開放端に他部材への接合用フランジが形成されていることを特徴とする請求項２１に記載された接合構造体。 The body part of the second member protrudes behind the plate wall on the most rear side of the first member and the third member, the projecting part is expanded by the electromagnetic forming, and is joined to another member at the open end of the body part. The joint structure according to claim 21, wherein a flange for use is formed.

第２部材の底と、それが当接する第３部材の板状壁及び該板状壁が当接する第１部材の板状壁が互いに接合されていることを特徴とする請求項１６〜２３のいずれかに記載された接合構造体。 24. The bottom of the second member, the plate-like wall of the third member with which the second member abuts, and the plate-like wall of the first member with which the plate-like wall abuts are joined to each other. A bonded structure according to any one of the above.